US4774107A - Process and apparatus for applying liquid, pasty or foamy substances to both sides of webs of material - Google Patents

Process and apparatus for applying liquid, pasty or foamy substances to both sides of webs of material Download PDF

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US4774107A
US4774107A US07/026,802 US2680287A US4774107A US 4774107 A US4774107 A US 4774107A US 2680287 A US2680287 A US 2680287A US 4774107 A US4774107 A US 4774107A
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Prior art keywords
web
substance
rolls
sides
applicator rolls
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Expired - Fee Related
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US07/026,802
Inventor
Kurt von Kwiatkowski
Wolfram Durr
Heinrich Mortl
Rainer Schmidt
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Vits Maschinenbau GmbH
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Vits Maschinenbau GmbH
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Assigned to VITS MASCHINENBAU GMBH reassignment VITS MASCHINENBAU GMBH ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DURR, WOLFRAM, KWIATKOWSKI, KURT V., MORTL HENRICH, SCHMIDT, RAINER
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0839—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being unsupported at the line of contact between the coating roller and the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/086—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/42—Paper being at least partly surrounded by the material on both sides
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
    • D21H23/72—Plural serial stages only
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/0025—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material
    • D21H5/003—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material with a roller

Definitions

  • the invention relates to a process for applying liquid, pasty or foamy substances to both sides of webs of material, particularly swellable webs of material, by means of applicator rolls disposed one behind the other in the direction of movement of the web of material, followed by drying in a suspension drier.
  • the process according to the invention is characterized in that the substance is applied on both sides in a layer thickness adjustable on the applicator rolls at places disposed immediately one after the other in space without the web of material being supported in the rear, the web being guided substantially straight and its angle of looping around the applicator rolls being adjustable, no action being taken on the web of material between the two coatings. More particularly, having regard to the speed of the web of material, the places of application are disposed at such a short distance after one another that the time during which the substance is applied at the first place of application is not long enough before the second place of application to impregnate the web of material and/or substantially reduce its strength.
  • the apparatus for the performance of the process which comprises a suspension drier and applicator rolls disposed one after the other in the direction of movement of the web of material upstream of the drier inlet, is according to the invention characterized in that the applicators rolls take the form of a pair of S-rolls, a metering device being provided for each roll, and are disposed without contact pressure rolls as close as possible one after the other and with a looping angle which is just enough for the application of the substance and is so small that the web of material is guided substantially straight, at least one applicator roll being movable out of the application position so that the web of material can be drawn in unimpeded.
  • the metering devices used can be adjustable wipers, squeezing rolls or the like.
  • the process steps according to the invention and the features of the apparatus ensure that after the first application and after the second application, until drying the web of material is not influenced by the substance applied to such an extend that the web stretches and/or shrinks and therefore becomes folded, and/or the substances to be applied on both sides become mixed. Due to the special arrangement of the applicator rolls, the period during which the substances act on the web is too short for its quality and shape to be negatively influenced in that way.
  • the guiding of the webs of material over the two applicator rolls (S-rolls) and the metering of the substance at the rollers themselves ensure that on the one hand the substance is applied in a metered quantity to the two sides of the web, without the web being supported on the side opposite each applicator roll, while on the other hand the application period itself and the delay between the two coatings and until the start of drying is negligibly small.
  • the adjustable small looping angle or at least one adjustable applicator roll not only enables the looping necessary for the application of a predetermined quantity of substance to be adjusted, but also enables the two applicator rolls to be moved far enough apart for the web ob material to be drawn in free of impedance.
  • the process and apparatus according to the invention can be particularly advantageously used if the web of material is to be treated in two stages-i.e., if in the first stage a web of material, such as paper or a nonwoven is impregnated with a fill, such as urea, and after intermediate drying the substance is applied to both sides of the web of material thus pretreated, using the apparatus according to the invention.
  • a web of material such as paper or a nonwoven
  • a fill such as urea
  • FIG. 3 shows a diagramatic side elevation of an apparatus as shown in FIG. 1 or FIG. 2 with a preceding impregnation apparatus and suspension drier.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Air Bags (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Solid Thermionic Cathode (AREA)
  • Stroboscope Apparatuses (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Noodles (AREA)

Abstract

The invention relates to a process and apparatus for applying liquid, pasty or foamy substances to both sides of webs of material. To prevent any adverse effect on the web of material or the applied substances, application is performed by means of a pair of S-rolls 7,11 at a looping angle just enough for the application, the web of material being guided substantially straight. The two applicator rolls 7,11 are disposed as close as possible to one another immmediately upstream of the drier inlet 1. At least one of the applicator rolls 11 can be moved out of the operating position, to enable the web of material to be drawn in unimpeded.

Description

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a process for applying liquid, pasty or foamy substances to both sides of webs of material, particularly swellable webs of material, by means of applicator rolls disposed one behind the other in the direction of movement of the web of material, followed by drying in a suspension drier.
2. Discussion of Prior Art
There is no problem in applying solvent-containing substances to webs of material, such as papers or nonwovens, since the solvent influences the behaviour of the web of material. In dependence of the kind of material, the web of material may stretch, shrink or fold as it runs over deflector or applicator rolls. It is true that in order to avoid folding, stretching rolls have been disposed downstream of the first applicator roll and/or the web of material has been levelled by intermediate drying. However, stretching rolls can be used to a limited extend, and may even be out of the question if the web has become sticky due to being impregnated with the substance to be applied, for example, a resin.
Another disadvantage of conventional processes is that the substances to be applied on both sides of the web have different periods of action available until drying, the result being loss of quality.
These disadvantages exist, for example, in a known apparatus for application on both sides, wherein the web of material is deflected around each of two deflector rolls and is therefore guided in S-shape. Between the first and second deflector rolls, an applicator roll applies the substance to one side of the web from below, the other substance being applied also from below to the other side of the web downstream of the second deflector roll. Due to the long path between the two places of application and the deflector roll the aforedescribed disadvantages may occur, more particularly with swellable and porous webs of material. Moreover, with such an arrangement of deflector and applicator rolls it is difficult to draw in the web of material.
Another difficulty arises in conventional processes if different kinds of substances are to be applied to the two sides of the web. In such cases there is a risk that the substances will become mixed with one another if the time elapsing until drying is too long.
Lastly, practical requirements demand that the substances shall be applicable not only uniformly, but precisely metered.
OBJECT OF THE INVENTION
It is an object of the invention to provide a process and apparatus for the uniform and metered application of liquid, pasty or foamy substances to both sides of webs of material, whereby the quality of the web is not adversely affected by the substances. The invention also enables the web of material to be readily drawn through the application mechanism into the suspension drier.
SUMMARY OF THE INVENTION
To this end, the process according to the invention is characterized in that the substance is applied on both sides in a layer thickness adjustable on the applicator rolls at places disposed immediately one after the other in space without the web of material being supported in the rear, the web being guided substantially straight and its angle of looping around the applicator rolls being adjustable, no action being taken on the web of material between the two coatings. More particularly, having regard to the speed of the web of material, the places of application are disposed at such a short distance after one another that the time during which the substance is applied at the first place of application is not long enough before the second place of application to impregnate the web of material and/or substantially reduce its strength.
The apparatus for the performance of the process, which comprises a suspension drier and applicator rolls disposed one after the other in the direction of movement of the web of material upstream of the drier inlet, is according to the invention characterized in that the applicators rolls take the form of a pair of S-rolls, a metering device being provided for each roll, and are disposed without contact pressure rolls as close as possible one after the other and with a looping angle which is just enough for the application of the substance and is so small that the web of material is guided substantially straight, at least one applicator roll being movable out of the application position so that the web of material can be drawn in unimpeded. The metering devices used can be adjustable wipers, squeezing rolls or the like.
The process steps according to the invention and the features of the apparatus ensure that after the first application and after the second application, until drying the web of material is not influenced by the substance applied to such an extend that the web stretches and/or shrinks and therefore becomes folded, and/or the substances to be applied on both sides become mixed. Due to the special arrangement of the applicator rolls, the period during which the substances act on the web is too short for its quality and shape to be negatively influenced in that way. The guiding of the webs of material over the two applicator rolls (S-rolls) and the metering of the substance at the rollers themselves ensure that on the one hand the substance is applied in a metered quantity to the two sides of the web, without the web being supported on the side opposite each applicator roll, while on the other hand the application period itself and the delay between the two coatings and until the start of drying is negligibly small. The adjustable small looping angle or at least one adjustable applicator roll not only enables the looping necessary for the application of a predetermined quantity of substance to be adjusted, but also enables the two applicator rolls to be moved far enough apart for the web ob material to be drawn in free of impedance.
Clearly, the applicator rolls can be designed in conventional manner--i.e., take the form of screened rolls or operate like immersion rolls, and wipers or squeezing rolls for metering the thickness of the layer on the rollers can be adjustable. The rolls can also be driven in the same direction as or in the direction opposite to the direction of movement of the web of material.
The process and apparatus according to the invention can be particularly advantageously used if the web of material is to be treated in two stages--i.e., if in the first stage a web of material, such as paper or a nonwoven is impregnated with a fill, such as urea, and after intermediate drying the substance is applied to both sides of the web of material thus pretreated, using the apparatus according to the invention.
In conventional two-stage processes, after being impregnated with the filler (urea) the web of material is only moderately dried by infrared radiation on both sides. In the second stage, the coating of a higher quality material is also performed by impregnation. For the metering of the quantity applied, the web of material then runs through the pair of squeezing rolls, from which the web moves into a suspension drier. A process of this kind fails to give a large throughput, nor does it permit precise metering of the outer applied layers of higher quality substance.
These disadvantages are obviated by one embodiment of the invention, wherein the web of material, more particularly paper of nonwoven, is filled more particularly by impregnation and subjected to intermediate drying before the substance is applied to the web on both sides. Preferably the intermediate drying is performed in a suspension drier. This construction of the apparatus is characterized in that an impregnating device with a drier is disposed upstream of the applicator rolls in the direction of movement of the web of material.
DESCRIPTION OF AN EMBODIMENT OF THE INVENTION Brief Description of the Drawing
FIG. 1 shows a diagramatic side elevation of an apparatus for applying substances to both sides of webs of material,
FIG. 2 shows a diagramatic side elevation of a detail of a variant embodiment of the apparatus shown in FIG. 1, and
FIG. 3 shows a diagramatic side elevation of an apparatus as shown in FIG. 1 or FIG. 2 with a preceding impregnation apparatus and suspension drier.
Detailed Description of the Embodiment of the Invention
Disposed upstream of an inlet 1 (slot) of a suspension drier 2 are two applicator mechanisms 3,4 for applying liquid, pasty or foamy substances to a web of material 5 which is guided over a deflector roller 6.
The applicator mechanism 3 comprises an applicator roll 7, which takes the form of a screened roll and dips into the liquid substance in a bowl 8. A wiper can be adjusted via an adjusting member 10 in relation to the generated surface of the applicator roll 7. The applicator roll 7 is not vertically adjustable and is disposed with its apex in the guiding plane of the web of material 5 through the drier 2.
The second applicator mechanism 5 also comprises an applicator roll 11, in relation to whose screened generated surface 11 a wiper 12 can be adjusted via an adjusting member 13. Substance for application is supplied to a wedge 14 formed by the generated surface of the applicator roll 11 and the wiper 12. The roll 11, together with the wiper 12 and the adjusting member 13, is retained in a holder 15 which a lifting device 16 can move upwards out of the operating position shown in the drawing.
To draw in the web of material 5, the lifting device 16 moves the holder 15 upwards, thus producing a large enough unobstructed space through which the web of material 5 can be drawn in without impedance. After the web has been drawn in, the holder 15 is moved down again into the position illustrated in the drawing, in which the two applicator rolls 7,11, close to one another, form a pair of S-rolls. In this operating position the web of material 5 loops around the particular applicator roll only over a small area, which is substantially smaller than 90° looping angle. With this small looping angle, which means that the web of material 5 is still being guided substantially straight, on the one hand the substance can be satisfactorily applied without the web being supported on the rear side, and on the other hand the applicator rolls can be disposed immediately one beside the other, so that the delay between application to one side of the web and application to the other side is negligibly small having regard to the speed of the web, or at any rate so small that the solvent contained in the substances cannot have a negative influence on the web.
The embodiment illustrated in FIG. 2 essentially differs from that shown in FIG. 1 only by the feature that the first applicator roll 17 does not take the form of an immersion roll, but the substances to be applied are introduced into the wedge 19 formed by the generated surface of roll 18 and an adjustable wiper 19.
Clearly, the applicator rolls 7,11,17 can run contrary to (FIG. 1) or in the same direction as (FIG. 2) the web of material.
Clearly also instead of an applicator roll with a screened generated surface and adjustable wiper, an applicator roll can be provided having a smooth generated surface and a squeezing roll adjustable thereon, to meter the substance to be applied.
The embodiment illustrated in FIG. 3 is extended by an impregnating device 20 and suspension drier 2 preceding the applicator mechanisms 3 and 4. The impregnating device comprises a tank filled with impregnating liquid, for example, a filler (urea), an applicator roll 23 which dips into the impregnating liquid and applies the filler to the web of material 5, deflector rolls 24,25 disposed above the impregnating liquid and deflector rolls 27,28 disposed in the impregnating liquid, which guide the web of material 5 therethrough. The web of material 5 filled with the impregnating liquid is deflected into the horizontal on a deflector roll 29. The deflector roll 29 can be an air-blast-fed roll or an air saddle over which the web of material is guided without contact. The suspension drier 2 can dry the web of material more efficiently than an infrared radiator. The web of material thus filled with filler then passes to the applicator mechanisms 3,4, which merely need to apply further small quantities of the higher quality substance to the filled web of material. Since the web of material has previously been filled with filler, the result is therefore a uniform, smooth coating.

Claims (8)

What is claimed is:
1. A process for applying liquid, pasty or foamy substances on both sides of a web of material, comprising the steps of:
moving a web along a given direction;
disposing applicator rolls on both sides of the web with one immediately behind the other along the given direction and in contact with one surface thereof such that the web is supported on only one surface at each application roll and the web is guided substantially straight therethrough;
adjusting the layer thickness directly on the applicator rolls;
drying the web in a suspension drier only after both coatings; and
wherein the applicator rolls are spaced apart at a predetermined distance for the speed of the web such that the time during which a substance is applied at a first roller and a substance is applied at the second roller is not sufficiently long to impregnate the web of material and substantially reduce the strength of the web of material.
2. A process according to claim 1, wherein no intermediate drying takes place between the two coatings.
3. A process according to claim 1, wherein the web of material is filled with a second substance and given an intermediate drying before a main substance is applied to the web on both sides.
4. A process according to claim 3, wherein the filling with a second substance is performed by impregnating the web of material.
5. The process according to claim 1, wherein the looping angle around the rolls to the web is less than 90°.
6. An apparatus for applying liquid, pasty or foamy substances on both sides of a web of material, comprising:
means for moving a web along a given direction;
applicator rolls on both sides of the web with one immediately behind the other along the given direction and in contact with one surface thereof such that the web is supported on only one surface at each application roll and the web is guided substantially straight therethrough;
means for adjusting the layer thickness directly on the applicator rolls;
means for drying the web downstream of the applicator rolls; and
wherein the applicator rolls are spaced apart at a predetermined distance for the speed of the web such that the time during which a substance is applied at a first roller and a substance is applied at the second roller is not sufficiently long to impregnate the web of material and substantially reduce the strength of the web of material.
7. An apparatus according to claim 6, wherein the adjusting means comprises an adjustable wiper.
8. An apparatus according to claim 6, further comprising an impregnating device with a drier is disposed upstream of the applicator rolls in the direction of movement of the web of material.
US07/026,802 1986-04-02 1987-03-17 Process and apparatus for applying liquid, pasty or foamy substances to both sides of webs of material Expired - Fee Related US4774107A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3610943 1986-04-02
DE3610943A DE3610943C1 (en) 1986-04-02 1986-04-02 Method and device for applying liquid, pasty or foamy masses to material webs on both sides

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US4774107A true US4774107A (en) 1988-09-27

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US07/026,802 Expired - Fee Related US4774107A (en) 1986-04-02 1987-03-17 Process and apparatus for applying liquid, pasty or foamy substances to both sides of webs of material

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US (1) US4774107A (en)
EP (1) EP0239835B1 (en)
JP (1) JPS62238859A (en)
AT (1) ATE64422T1 (en)
BR (1) BR8701476A (en)
DE (3) DE3610943C1 (en)
ES (1) ES2022176B3 (en)
FI (1) FI83396C (en)
GR (1) GR3002435T3 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913084A (en) * 1989-04-19 1990-04-03 Seymour Ronald P Apparatus useful in devices for controlling the thickness of coating applied to a substrate
US5492722A (en) * 1990-09-17 1996-02-20 Shell Oil Company Process and apparatus for resin impregnation of a fibrous substrate
US5614256A (en) * 1991-07-24 1997-03-25 Wacker-Chemie Gmbh Coating composition for producing watertight, vapor-permeable and flame-retardant coatings
US5620742A (en) * 1992-10-09 1997-04-15 Mcneil-Ppc, Inc. Method for making absorbent articles having printed polymer coatings
US5639303A (en) * 1994-05-09 1997-06-17 Voith Sulzer Papiermaschinen Gmbh Apparatus for the application on both sides of a liquid medium onto a moving material web, in particular of paper or cardboard
US5702760A (en) * 1992-06-05 1997-12-30 J.M. Voith Gmbh Process for coating running webs
US6048429A (en) * 1998-08-11 2000-04-11 Marquip, Inc. Production of double wall corrugated web
US6620240B2 (en) * 2000-02-24 2003-09-16 Samsung Electronics Co., Ltd. Sheet coating apparatus
US20060105108A1 (en) * 2004-11-12 2006-05-18 Eastman Kodak Company Gravure cylinder patch coating apparatus and method
US20130337709A1 (en) * 2007-09-28 2013-12-19 Johns Manville Composite board containing glass fiber mat

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DE4414949A1 (en) * 1994-04-28 1995-11-02 Voith Gmbh J M Device for applying at least one liquid medium to a running web of material
DE19901525C2 (en) * 1999-01-16 2001-02-08 Vits Maschinenbau Gmbh Plant for impregnating and coating paper
WO2012126816A1 (en) * 2011-03-23 2012-09-27 Vits Technology Gmbh Device and method for impregnating a paper web
DE102013105709A1 (en) * 2013-06-04 2014-12-04 A. Monforts Textilmaschinen Gmbh & Co. Kg Apparatus for coating and / or impregnating a textile web

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US4913084A (en) * 1989-04-19 1990-04-03 Seymour Ronald P Apparatus useful in devices for controlling the thickness of coating applied to a substrate
US5492722A (en) * 1990-09-17 1996-02-20 Shell Oil Company Process and apparatus for resin impregnation of a fibrous substrate
US5630874A (en) * 1990-09-17 1997-05-20 Shell Oil Company Apparatus for resin impregnation of a fibrous substrate
US5614256A (en) * 1991-07-24 1997-03-25 Wacker-Chemie Gmbh Coating composition for producing watertight, vapor-permeable and flame-retardant coatings
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US5620742A (en) * 1992-10-09 1997-04-15 Mcneil-Ppc, Inc. Method for making absorbent articles having printed polymer coatings
US5639303A (en) * 1994-05-09 1997-06-17 Voith Sulzer Papiermaschinen Gmbh Apparatus for the application on both sides of a liquid medium onto a moving material web, in particular of paper or cardboard
US6048429A (en) * 1998-08-11 2000-04-11 Marquip, Inc. Production of double wall corrugated web
US6620240B2 (en) * 2000-02-24 2003-09-16 Samsung Electronics Co., Ltd. Sheet coating apparatus
US20060105108A1 (en) * 2004-11-12 2006-05-18 Eastman Kodak Company Gravure cylinder patch coating apparatus and method
US7449216B2 (en) 2004-11-12 2008-11-11 Eastman Kodak Company Gravure cylinder patch coating apparatus and method
US20130337709A1 (en) * 2007-09-28 2013-12-19 Johns Manville Composite board containing glass fiber mat

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JPS62238859A (en) 1987-10-19
BR8701476A (en) 1988-01-19
ES2022176B3 (en) 1991-12-01
GR3002435T3 (en) 1992-12-30
FI83396B (en) 1991-03-28
FI83396C (en) 1991-07-10
EP0239835B1 (en) 1991-06-12
ATE64422T1 (en) 1991-06-15
DE8717966U1 (en) 1992-04-09
EP0239835A1 (en) 1987-10-07
DE3610943C1 (en) 1987-07-30
DE3770674D1 (en) 1991-07-18
FI871427A0 (en) 1987-04-01
FI871427A (en) 1987-10-03

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